Chrysanthemum plant named &#39;Swing Time Yellow&#39;

ABSTRACT

A new variety of Chrysanthemum plant named ‘Swing Time Yellow,’ having golden yellow single flowers with a flat capitulum form. The new variety has a medium vigor, free branching habit and good foliage presentation.

LATIN NAME OF THE GENUS AND SPECIES

[0001] Botanical classification: Dendranthema grandiflora.

VARIETY DENOMINATION

[0002] The new Chrysanthemum variety denomination is ‘Swing Time Yellow.’

BACKGROUND OF THE INVENTION

[0003] The present invention comprises a new and distinct cultivar of Chrysanthemum botanically known as Dendranthema grandiflora, and referred to by the cultivar name ‘Swing Time Yellow.’ ‘Swing Time Yellow, identified as 20230-6, originated as a whole plant mutation grown in a controlled planting of the variety Swing Time Dark (U.S. Plant patent application Ser. No. 09/900,239, in Chichester, West Sussex, United Kingdom. The new variety ‘Swing Time Yellow’ has been asexually reproduced by vegetative cuttings in Chichester, West Sussex, United Kingdom and the distinguishing characteristics are retained through successive generations of asexual reproduction.

BRIEF SUMMARY OF THE INVENTION

[0004] ‘Swing Time Yellow’ is a pot type of Chrysanthemum plant variety having golden yellow single flowers.

Comparison with Parent

[0005] Plants of the new Chrysanthemum variety ‘Swing Time Yellow’ are similar to the parent cultivar ‘Swing Time Dark’ in plant habitat and growth rate. In side-by-side comparisons in Chichester, West Sussex, United Kingdom, under commercial practice, plants of the new Chrysanthemum variety ‘Swing Time Yellow’ compared to the plants of the parent cultivar ‘Swing Time Dark’ in the following characteristics.

[0006] 1. The new variety ‘Swing Time Yellow’ produces yellow single flowers whereas the parent cultivar ‘Swing Time Dark’ produces deep orange single flowers.

[0007] 2. Plants of the new variety ‘Swing Time Yellow’ have similar inflorescence to plants of the parent cultivar ‘Swing Time Dark.’

Comparison with Other Varieties

[0008] Plants of the new Chrysanthemum variety ‘Swing Time Yellow’ are similar to the cultivar ‘Virunga Yellow’ (U.S. Plant Pat. No. 12,991), in plant habitat and growth rate. However, in side-by-side comparisons in Chichester, West Sussex, United Kingdom, under commercial practice, plants of the new Chrysanthemum variety ‘Swing Time Yellow’ differed from plants of the cultivar ‘Virunga Yellow’ in the following characteristics.

[0009] 1. The new variety ‘Swing Time Yellow’ produces golden yellow single flowers whereas the cultivar ‘Virunga Yellow’ produces yellow single flowers.

[0010] 2. Plants of the new variety ‘Swing Time Yellow’ have smaller and shorter inflorescence than plants of the cultivar ‘Virunga Yellow.’

BRIEF DESCRIPTION OF ILLUSTRATION

[0011] Typical specimens of the plant and flowers for the new Chrysanthemum variety ‘Swing Time Yellow’ are shown in the accompanying digital photograph. The colors shown are as true as possible within the usual limits of this kind of illustration. FIG. 1 is a whole plant view of the new variety ‘Swing Time Yellow’ grown in a pot. The plant shown in the illustration is 56 days from the commencement of Short Days.

DETAILED BOTANICAL DESCRIPTION

[0012] The following description of the new Chrysanthemum variety ‘Swing Time Yellow’ is of plants grown in a greenhouse in Chichester, West Sussex, United Kingdom in the month of May. The cultivar has not been observed under all possible environmental conditions. The phenotype may vary significantly with variations in the environment such as temperature, length of day and light intensity, without any variance in genotype. The commercial classification of the new variety is a pot Chrysanthemum.

[0013] Plants of the new variety have been grown successfully under temperature conditions averaging about 19° C. at night and about 17° C. to 24° C. during the day under light conditions of about 5000 to 6000 foot candles. The plants respond well to the use of growth retardant, such as B9 treatment at about 2 g per litre. To produce a commercial product the plants may be pinched once with the center bud removed. The typical container size for commercial growth is 1 litre. It has been observed that the shelf life of the new variety is about 21 days with a response time of about 7.5 weeks. The new variety is suitable for growth in a temperature range of 15° C. to 25° C.

[0014] The new variety may be produced as a spray. The following description is with respect to a plant produced as pot Chrysanthemum. In the description of this new Chrysanthemum variety, color values have been taken from The Royal Horticultural Society Color Chart (R.H.S.C.C.).

Plant

[0015] Plant type: pot.

[0016] Habit: upright.

[0017] Height: 24 cm.

[0018] Width: 32 cm.

[0019] Branching characteristics: upright and free branching.

[0020] Length of lateral branches: 16 cm.

[0021] Number of breaks from pinch: 5.

[0022] Stem color: 137C.

[0023] Response time: 52 days.

[0024] Vigor: medium.

[0025] Shelf life: 21 days.

[0026] Disease/Pest (susceptibility/resistance observed): None observed to date.

[0027] Growth retardant type and treatment: 3 applications of 2.5 gm/litre B9 @2, 21 and 28 days after sticking unrooted cuttings. The plants were grown for 2 weeks in Long Day conditions (20 hours of light) and then transferred to Short Day conditions (13 hours of dark).

[0028] Propagation:

[0029]Type.—vegetative propagation via stem cuttings.

[0030]Time to rooting.—‘14 days with soil temperatures of 18° C.’

[0031]Rooting habit.—after 7 days the first roots emerge and form root primodia. In 14 Long days a complete root system is developed.

Foliage

[0032] Number of leaves per lateral branch: 12.

[0033] Compound or single: single.

[0034] Arrangement of leaves: alternate.

[0035]Shape of leaf.—typically 5 lobed.

[0036]Size of leaf.—Width (cm): 5 cm Length (cm): 7 cm.

[0037]Leaf apex.—rounded.

[0038]Base.—cordate.

[0039]Attachment.—petioled.

[0040]Aspect.—slightly undulating.

[0041]Margin.—lobed.

[0042]Surface characteristics.—Top: slightly pubescent. Bottom: pubescent.

[0043] Petiole:

[0044]Color: 137C.

[0045]Length.—2 cm.

[0046] Venation: net prominent mid vein at underside.

[0047]Color.—upper side: near 137B. under side: near 137D.

[0048] Color:

[0049]Mature leaf, upper side.—near 137A; under side: near 137D.

[0050]Young leaf, upper side.—near 138A; under side: near 137C.

Flower

[0051] Flower appearance: matte.

[0052] Flower type: single.

[0053] Flower form: slightly cupped.

[0054] Flower shape: round.

[0055] Flowering habit: flat capitulum.

[0056] Number of blossoms per branch: 4.

[0057] Inflorescence form: cyme.

[0058]Depth of fully expanded blossoms.—2 cm.

[0059]Diameter of fully expanded blossoms.—6 cm.

[0060] Phyllaries:

[0061]Number.—25.

[0062]Color.—near 137B.

[0063]Length.—0.8 cm.

[0064]Width.—0.3 cm.

[0065]Texture/Appearance.—pubescent.

[0066] Peduncle: peduncle length is shortest at the terminal flower and progressively longer moving down the stem.

[0067]Length.—10 cm (average).

[0068]Color.—near 137B.

[0069]Surface.—slightly pubescent.

[0070] Habit.—slightly undulating.

[0071]Strength.—medium.

[0072] Pedicel:

[0073]Length.—terminal: 4 cm; lateral: 5 cm.

[0074]Color.—near 137B.

[0075]Surface.—slightly pubescent.

[0076]Habit.—slightly undulating.

[0077]Strength.—medium.

[0078] Ray florets:

[0079]Form/Shape.—straight and spatulate.

[0080]Texture/Appearance.—matte.

[0081]Number per flower.—32.

[0082]Length.—4 cm; Width: 0.8 cm.

[0083]Apex.—rounded.

[0084]Base.—tapered.

[0085]Margin.—entire.

[0086] Disc florets:

[0087]Form/Shape.—cylindrical.

[0088]Texture/Appearance.—shiny.

[0089]Number per flower.—150.

[0090]Length.—0.4 cm; Width: 0.1 cm.

[0091]Diameter of disc.—1.5 cm.

[0092] Fragrance: None observed.

[0093] Flower bud (at onset of color):

[0094]Length.—1 cm.

[0095]Diameter.—1 cm.

[0096]Form/Shape.—globular.

[0097] General flower color:

[0098] 1. Ray florets, upper side.—24B. Immature: near 24A. Mature: near 24B. Older/Fading: near 24C.

[0099] 2. Ray florets, under side.—24B. Immature: near 24B. Mature: near 24B. Older/Fading: near 24C.

[0100] 3. Disc florets.—Immature: near 151B. Mature: near 151B. Older/Fading: near 21C.

[0101] 4. Bud.—19A.

[0102] Flower progression with age: flower form does not change but there is a slight color fading with age.

Reproductive Organs

[0103] Gynoecium present on Ray and Disc florets.

[0104] Ray florets:.

[0105]Pistil number.—32.

[0106]Stigma color.—near 6C.

[0107]Stigma shape.—forked.

[0108]Style color.—near 6C.

[0109]Style length.—0.4 cm.

[0110] Disc florets:

[0111]Pistil number.—130.

[0112]Stigma color.—near 6C.

[0113]Stigma shape.—forked.

[0114]Style color.—near 6C.

[0115]Style length.—0.4 cm.

[0116] Androecium not observed.

[0117] Fruit and seeds: None observed. 

What is claimed is:
 1. A new and distinct variety of Chrysanthemum plant, substantially as described and illustrated herein. 